Glass sphere filled grades

Poslinski et al. [72] undertook the study of the influence of a bimodal size distribution of glass spheres on the rheology of filled polymer systems as already discussed in section 6.4. The bimodal size distribution was prepared by mixing together various vol% of tiie smaller 15 )un spheres with the larger 78 pm spheres given in Table 6.3. Various bimodal mixtures were compounded into a polybutene grade 24 polymer obtained from Petrochemical Division of the Chevron Company, at total solids concentrations up to 60% by volume. 

Comments EG = electrical grade, GF = glass fibre, MF = mineral filled, GS = glass sphere mineral-filled, g-w r = 960°C glow-wire rated, mg = moulding grade, UNC = unclassified. 

---